openai / Chat

GPT-6.1 Sol Fast Max

openai/gpt-6.1-sol-fast-xhigh

OpenAI's upgrade to GPT-6 Sol: near-GPT-6 Astra quality on agentic coding, computer use and professional work at about one-fifth of Astra's price. Accepts text and images in a 1,050,000-token context window.

Best for: Hardest reasoning problems where accuracy matters more than speed

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Catalog status

Enabled

Research checked

2026-10-15

Benchmark results

No recorded results

Results are source-attributed, not TokenBazaar measurements. Different tests and thinking variants are not interchangeable.

Published benchmark coverage

Reviewed sources do not include results for this exact version. Provider specifications and API capabilities remain listed separately.

Model specifications

Context window

1.05M

Published provider limit

Maximum output

128K

Published provider limit

Knowledge cutoff

April 2026

Upstream model

Input and output modalities

Provider-reported formats; API compatibility is detailed below.

Input

Text

Image

Output

Text

Exact model ID: openai/gpt-6.1-sol-fast-xhigh
Model type: Chat
Context window: 1,050,000 tokens
Maximum output: 128,000 tokens
Knowledge cutoff: April 2026

A context window is the total conversation budget, not a separate maximum input allowance; generated output and reasoning can use that budget. Published provider limits are not independently tested TokenBazaar request limits.

Versions and thinking levels

Choose from 8 enabled versions. The exact ID determines the version and its price; benchmark scores do not carry over between variants.

GPT-6.1 Sol$2.00 in / $10.00 out per 1M tokens

GPT-6.1 Sol Fast$4.00 in / $20.00 out per 1M tokens

GPT-6.1 Sol Fast High$4.00 in / $20.00 out per 1M tokens

GPT-6.1 Sol Fast Low$4.00 in / $20.00 out per 1M tokens

GPT-6.1 Sol Fast MaxSelected$4.00 in / $20.00 out per 1M tokens

GPT-6.1 Sol Deep$2.00 in / $10.00 out per 1M tokens

GPT-6.1 Sol Low$2.00 in / $10.00 out per 1M tokens

GPT-6.1 Sol Max$2.00 in / $10.00 out per 1M tokens

Features and tool support

TokenBazaar’s exposed interface, not every feature advertised by the provider. “Available” describes the implemented interface, not a successful test of every input or tool.

Reasoning configuration

The catalog version determines the requested reasoning effort.

Selected effort: xhigh. Fast version selected; premium catalog pricing applies.

Coding and agent workflows

Text/code generation and customer-managed tool loops.

Coding benchmark results do not establish a hosted terminal, sandbox, autonomous browser or guaranteed task success.

Streaming answers

Available

Incremental text through TokenBazaar’s chat endpoint; Claude also has native Messages access.

Customer-defined function tools

Limited

Only customer-defined function tools are forwarded. Model/protocol compatibility applies; your application authorizes and executes every tool.

Forced or named tool selection

Limited

The chat route accepts auto, none and required. A named-tool choice is not forwarded; exact model compatibility is not independently tested.

Images and PDFs

Available

Images and PDFs can be sent in chat messages to every chat model. File size and model limits apply.

Hosted web search / browsing

Not exposed

No provider-hosted web search or web-fetch tool is exposed. Customer-owned search can be implemented as an authorized function tool.

Hosted code execution / computer use

Not exposed

No built-in execution environment or computer-control tool is provided. Code generation is not code execution.

Hosted file search / persistent assistants

Not exposed

No hosted file-search index, Assistants endpoint or persistent provider agent is exposed.

Prompt caching

Available

Gateway-reported cache reads and writes are included in billing. See this model’s cached input and cache-write rates; a cache hit is not guaranteed. Output is billed at the standard output rate.

Batch / fine-tuning

Not exposed

No public batch or fine-tuning endpoint is offered here.

Prompt caching

Cached input:: $0.20 per 1M tokens
Cache write:: $5.00 per 1M tokens
Cached output:: Not offered · standard output rate applies

Eligible repeated prompt prefixes can use the cached-input rate when the gateway reports a cache hit. Cache hits are not guaranteed.

Caching guide and usage fields

TokenBazaar pricing

Input / 1M tokens

$4.00

Output / 1M tokens

$20.00

Cached input / 1M

$0.20

Cache write / 1M

$5.00

Test in Playground Get API key

Usage-based billing. Repeated prompt prefixes are cached automatically and billed at the cached input rate.

Billing calculator

Total input tokensprompt_tokens, including cached tokensCached input tokenscached_tokens reported in usageCache write tokenscache_creation_input_tokensOutput tokensIncludes thinking tokensNumber of requestsSame usage per request

Per request: $0.176
Total: $0.176
Without cache: $0.48

Cached tokens are billed at the cached-input rate; output is always billed at the standard rate. This is an estimate; your actual charge follows the usage the API reports.

API access

https://tokenbazaar.in/api/public

POST /v1/chat/completions

Requests require a TokenBazaar API key and sufficient wallet balance.

Integration documentation

Streaming and customer-defined function tools are routed through the chat API; compatibility varies by model. Image/PDF input is accepted by the bridge, but model vision support needs provider confirmation. Hosted search and computer-use tools are not enabled; public Responses, Assistants, Batch and fine-tuning endpoints are not exposed.

Explore similar models

GPT-5.6 Sol Claude Opus 5.5 GPT-5

Sources and verification

Provider specifications describe the upstream model, not a guarantee of every feature through TokenBazaar. Prices come from the enabled catalog; benchmark results belong to the exact tested model.

OpenAI API · GPT-6.1 Sol model
Vendor-reported
Last checked 2026-10-15
OpenAI · Introducing GPT-6.1 Sol
Vendor-reported
Last checked 2026-10-15
OpenAI · GPT-6.1 Sol system card addendum
Vendor-reported
Last checked 2026-10-15

Research notes (2)

Published provider limits; maximum-capacity requests have not been independently exercised through TokenBazaar.
All benchmark scores are self-reported by OpenAI at launch (29 September 2026); TokenBazaar has not re-run them.